Airaid PowerAid Throttle Body Spacer AIR400-590 for 1997-2004 Ford 4.6L Applications

The POWERAID Throttle Body Spacer is designed to enhance off-idle torque from 800 rpm to approximately 3,000 rpm. The spacer utilizes it's unique, patented Helix Bore design to spin the incoming air charge as it passes through the throttle body spacer. The spinning air action boosts the velocity of the incoming air and contributes to better atomization of the air/fuel mixture as the air charge enters the combustion chamber. The end result is more part-throttle torque and improved mid-range power. The POWERAID Throttle Body Spacer is designed to enhance mid-range torque using a patented Helix Bore which spins intake air going through the throttle body spacer. Mounting hardware included for installation.

• True bolt-on upgrade that installs in under an hour with common hand tools. No drilling, cutting, or modifications required, making it one of the easiest performance add-ons you can install.
• Provides Stronger Mid-Range Power

The Airaid PowerAid Throttle Body Spacer is designed to improve off-idle and mid-range torque on select Ford vehicles equipped with the 4.6L engine. Its patented Helix Bore design creates a swirling motion in the incoming air charge as it passes through the throttle body spacer. This increased air velocity can promote improved air and fuel atomization as the mixture enters the combustion chamber, helping deliver stronger part-throttle response and improved mid-range power from approximately 800 to 3,000 rpm.

This Airaid PowerAid spacer is a true bolt-on performance upgrade that installs using common hand tools. No drilling, cutting, or permanent modifications are required, making it a practical option for improving throttle response and usable engine performance. Mounting hardware is included for installation. The Airaid AIR400-590 is EPA compliant and carries California Air Resources Board Executive Order D-609.

Fitment: Designed for select 1997-2003 Ford F-150 and 2003-2004 Ford Expedition applications with the 4.6L engine. Verify vehicle year, engine configuration, and existing intake components before ordering.

What's Included: One Airaid PowerAid throttle body spacer and installation mounting hardware. Professional installation is recommended when required by the vehicle manufacturer or local regulations.

Features:

• Helix Bore Design: Patented internal geometry spins the incoming air charge to increase air velocity through the throttle body.
• Improved Mid-Range Power: Supports stronger off-idle and mid-range torque from approximately 800 to 3,000 rpm.
• Enhanced Air/Fuel Atomization: Swirling intake air may help improve air and fuel mixing as the charge enters the combustion chamber.
• Simple Bolt-On Installation: Installs with common hand tools without drilling, cutting, or permanent vehicle modifications.

Fitments:
1997 Ford Expedition Eddie Bauer
1997 Ford Expedition XLT
1997 Ford F-150 Base
1997 Ford F-150 Lariat
1997 Ford F-150 XL
1997 Ford F-150 XLT
1998 Ford Expedition Eddie Bauer
1998 Ford Expedition XLT
1998 Ford F-150 Base
1998 Ford F-150 Lariat
1998 Ford F-150 XL
1998 Ford F-150 XLT
1999 Ford Expedition Eddie Bauer
1999 Ford Expedition XLT
1999 Ford F-150 Base
1999 Ford F-150 Lariat
1999 Ford F-150 XL
1999 Ford F-150 XLT
2000 Ford Expedition Eddie Bauer
2000 Ford Expedition XLT
2000 Ford F-150 Base
2000 Ford F-150 Lariat
2000 Ford F-150 XL
2000 Ford F-150 XLT
2001 Ford Expedition Eddie Bauer
2001 Ford Expedition XLT
2001 Ford F-150 King Ranch
2001 Ford F-150 Lariat
2001 Ford F-150 XL
2001 Ford F-150 XLT
2002 Ford Expedition Eddie Bauer
2002 Ford Expedition XLT
2002 Ford F-150 King Ranch
2002 Ford F-150 Lariat
2002 Ford F-150 XL
2002 Ford F-150 XLT
2003 Ford Expedition Eddie Bauer
2003 Ford Expedition XLT
2003 Ford F-150 King Ranch
2003 Ford F-150 Lariat
2003 Ford F-150 XL
2003 Ford F-150 XLT
2004 Ford Expedition Eddie Bauer
2004 Ford Expedition NBX
2004 Ford Expedition XLS
2004 Ford Expedition XLT
2004 Ford Expedition XLT Sport
2004 Ford F-150 Heritage XL
2004 Ford F-150 Heritage XLT

Air Freight Prohibited: false
Not Carb Approved: false
Carb Eo Number: D-609
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: Compliant
Carb Acknowledgement Required: false
Regular Stock: false
Units Per Sku: 1